HEADER NEUROTOXIN 18-JAN-98 1XGC TITLE ALPHA CONOTOXIN GI: 2-3;7-13 DISULFIDE BOND ISOMER, NMR, 25 STRUCTURES COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN GI; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: AMIDATED C-TERMINUS SOURCE MOL_ID: 1 KEYWDS NEUROTOXIN, ALPHA-CONOTOXIN, NICOTINIC ACETYLCHOLINE RECEPTO KEYWDS 2 DISULFIDE BOND ISOMERS EXPDTA SOLUTION NMR NUMMDL 25 AUTHOR J.GEHRMANN,P.F.ALEWOOD,D.J.CRAIK REVDAT 4 02-MAR-22 1XGC 1 REMARK LINK REVDAT 3 24-FEB-09 1XGC 1 VERSN REVDAT 2 23-MAR-99 1XGC 1 COMPND REMARK TITLE HEADER REVDAT 2 2 1 SOURCE JRNL KEYWDS REVDAT 1 02-FEB-99 1XGC 0 JRNL AUTH J.GEHRMANN,P.F.ALEWOOD,D.J.CRAIK JRNL TITL STRUCTURE DETERMINATION OF THE THREE DISULFIDE BOND ISOMERS JRNL TITL 2 OF ALPHA-CONOTOXIN GI: A MODEL FOR THE ROLE OF DISULFIDE JRNL TITL 3 BONDS IN STRUCTURAL STABILITY. JRNL REF J.MOL.BIOL. V. 278 401 1998 JRNL REFN ISSN 0022-2836 JRNL PMID 9571060 JRNL DOI 10.1006/JMBI.1998.1701 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1XGC COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000177258. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 278 REMARK 210 PH : 3.5 REMARK 210 IONIC STRENGTH : 0 REMARK 210 PRESSURE : 1 ATMOSPHERE REMARK 210 SAMPLE CONTENTS : 30%CD3OH, 60%H2O, 10%D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : TOCSY; NOESY; DQF-COSY; HMQC REMARK 210 SPECTROMETER FIELD STRENGTH : 750 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE750 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : X-PLOR 3.1 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 25 REMARK 210 CONFORMERS, SELECTION CRITERIA : 50 LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: THE STRUCTURE WAS DETERMINED USING 300MS NOESY EXPERIMENTS REMARK 210 ON A 5MM SAMPLE OF GI(2-3;7-13). REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 13 CYS A 2 CA - CB - SG ANGL. DEV. = 7.5 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 1 CYS A 2 -52.06 -157.29 REMARK 500 1 ALA A 6 53.80 -151.81 REMARK 500 1 ARG A 9 82.07 58.65 REMARK 500 1 HIS A 10 -52.94 -160.93 REMARK 500 1 TYR A 11 -85.46 -163.27 REMARK 500 1 SER A 12 101.71 167.30 REMARK 500 2 CYS A 2 -48.98 178.59 REMARK 500 2 CYS A 3 -50.13 -121.38 REMARK 500 2 ASN A 4 67.72 -115.55 REMARK 500 2 ALA A 6 41.19 -165.12 REMARK 500 2 CYS A 7 22.51 -162.02 REMARK 500 2 HIS A 10 -67.98 -147.08 REMARK 500 2 SER A 12 82.21 61.15 REMARK 500 3 CYS A 2 -54.13 -159.07 REMARK 500 3 ASN A 4 67.59 -117.94 REMARK 500 3 ALA A 6 39.69 -167.51 REMARK 500 3 CYS A 7 25.63 -162.99 REMARK 500 3 HIS A 10 -69.64 -135.59 REMARK 500 3 SER A 12 78.47 56.69 REMARK 500 4 CYS A 2 -68.23 -176.11 REMARK 500 4 CYS A 3 -24.84 -144.64 REMARK 500 4 ASN A 4 52.72 -119.73 REMARK 500 4 ALA A 6 26.93 174.50 REMARK 500 4 ARG A 9 7.85 -178.94 REMARK 500 4 TYR A 11 -66.49 -167.81 REMARK 500 4 SER A 12 96.46 161.09 REMARK 500 5 CYS A 2 -71.94 -177.45 REMARK 500 5 ALA A 6 38.73 -166.10 REMARK 500 5 CYS A 7 24.09 -158.29 REMARK 500 5 HIS A 10 -46.11 -146.51 REMARK 500 5 SER A 12 80.93 48.98 REMARK 500 6 CYS A 2 -53.88 -159.06 REMARK 500 6 PRO A 5 -75.90 -81.54 REMARK 500 6 ALA A 6 33.10 -97.15 REMARK 500 6 CYS A 7 66.62 -158.35 REMARK 500 6 HIS A 10 -80.49 -140.68 REMARK 500 6 SER A 12 99.88 61.55 REMARK 500 7 CYS A 2 -71.29 -116.81 REMARK 500 7 CYS A 3 -21.30 -141.63 REMARK 500 7 ASN A 4 74.36 -119.53 REMARK 500 7 ALA A 6 48.56 -166.62 REMARK 500 7 ARG A 9 79.45 59.12 REMARK 500 7 HIS A 10 -51.52 -159.38 REMARK 500 7 TYR A 11 -86.41 -163.20 REMARK 500 7 SER A 12 97.53 171.23 REMARK 500 8 CYS A 2 -53.98 -158.86 REMARK 500 8 ALA A 6 37.95 -167.93 REMARK 500 8 CYS A 7 23.73 -158.65 REMARK 500 8 TYR A 11 -73.56 -170.00 REMARK 500 8 SER A 12 80.16 173.34 REMARK 500 REMARK 500 THIS ENTRY HAS 138 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ASN A 4 PRO A 5 7 149.65 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NH2 A 14 DBREF 1XGC A 1 13 UNP P01519 CXAA_CONGE 1 13 SEQRES 1 A 14 GLU CYS CYS ASN PRO ALA CYS GLY ARG HIS TYR SER CYS SEQRES 2 A 14 NH2 HET NH2 A 14 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N SSBOND 1 CYS A 2 CYS A 3 1555 1555 2.04 SSBOND 2 CYS A 7 CYS A 13 1555 1555 2.02 LINK C CYS A 13 N NH2 A 14 1555 1555 1.30 SITE 1 AC1 2 ASN A 4 CYS A 13 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 MODEL 1